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(No Model.) 3 sheets-Sneet 2.

P. W. VOERDE.

SAFETY ATTACHMENT FOR ELEVATORS.

No. 262,&61. Patnted Aug.15, 1882.

ii'ir /z jmvem-o (No Model.) 3 Sheets--Sheet 3,

P. W. VOERDE. SAFETY ATTAGHMENT FOR BLEVATOES.

No. 262,861. Patented Au' .15, 1882.

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UNITED STATES P TENT OFFICE.

FREDERICK w. VERDE, OF CHICAGO, ILLINOIS, ASSIGNOR TO PETER J. sINGER,on SAME PLACE.

SAFETY ATTACHMENT FOR ELEVATORS.

SPECIFICATION forming part of Letters Patent No. 262,861,` dated August15, 1882.

.Applicationfiled May 26, 1382. (No model.)

To all whom it may concrn: y

Be it known that I, FREDERIK W. VOERDE, residin g at Chicago, in thecounty of Cook and State of Illinois, and a citizen of the UnitedStates, have invented new and useful Improvements in Safety Attachmentsfor Elevators, of which the following is a full description, referecebeing had to the accompanying drawings, in which- Figure l is a sideelevaton, showing the arrangement of the safety attachment when twolifting or controlling leversare used Fig. 2, a vertical transversesection on line x ofFig. 1; Fig. 3, an enlarged detail, showing thearrangement of thestopping devices in connection with two lifting or controlling'levers Fi g. 4, an under-side vew of the parts shown in Fig. 3,with the guide-rails in section; Fig. 5, an enlarged detail, showing thearrangement of the stopping devices in connection with a single liftingor controlling lever; Fig. 6, an under-side View of the parts shown inFig. 5, with the guide-rail in section; Fig. 7, a detail showing thearrangenent of the eceentrics in connection With a corner guide-rail;Figs; 8

and 9, a side elevation and an edge view of the eccentric for the cornerguide-rail.

This invention relates to safety attachments to be applied to elevatorsfor the purpose of arrestng or stopping the descent of the cage orplatform in case of brcakage of the hoistin gcable, or of slack of suchcable from any cause, or other defect requiring the arrest or stoppageof the cage or platform, and has for its object to construct a safetyattachment which can be readily applied to elevators of the ordinaryConstruction, and which, when applied, will perform the work required inan efficient and reliable nanner when needed. This object I accomplishby the mechanism illustrated and hereinafter described and claimed.

In the drawings, A represents the guide rails or bars; B, the bottom ofthe platform or cage, supported on a suitable framework, B' 0, guides orforks located one on each end of the bottom and straddling or forking heguiderails A, as usual; D, the upper haro the cage or platform; E, endbars, one attached to each end of the bar D; F, brace-bars securing thetop and bottom of the cage or platform together. These partsrepresentcd` by the letters A,`B, B', G, DE, and F maybe of the form ofconstruction and arrangement shown, or of such other of the usual andwell-known forms as may be desired.

Gr is the hoisting-cable, operatingin the usual mannerg'H, a stirrup orhanger encircling the bar D, which, as shown, is notehed on each side toreceive the side straps or pieces of the stirrup and form guidestherefor. As shown, the upper end of each side strap is bent inwardslightly and forms ears b, in which is pivoted an eye or loop, a, towhich the end of the hoist-- ing-cable Gr is attached.

I represen ts lifting or controllin g levers, two being used in the formof construction and arrangement shown in Fgs: l to 4, inclusive. Eachlever is formed of a' main or body portion, with a cro'sshead or`prtion, I', each end of which, as shown, is turned up to form ari earor support, d, in which is an opening or slot, e. The cross-'head ofeach lever is formed with or attached to the lever, and the inner end ofeach lever is pivotcd or hinged by a suitable connection, c, to theunder face of the bar D. The connection of the lever is on the oppositeside of the cage or platform to that of its working or'free end, and thelev'er is of sufficient length to allow the freeend the required amountof movement to do its Work. These levers, when two are used, are locatedside by side and pass through the stirrup or hanger H, so that when thestirrup or hanger is raised the outer or free ends of each lever will beraised sinultaneously, or nearly so, and

:to the same height.

J are arms or levers, four being used when two levers I are used, two oneach end of the i cage or platform, one on each side of. the bar D, eachpassingthrough the slot or opening e in the ear or support d. The outeror free end ot' these levers may be provided with a ball or weight, h,as shown in Fig. 2, to assist in throwing them down, or a spring,f, maybe arranged between the upper face ofeach lever I and the underface ofthe bar D, as shownin F'g. 3, to throw down the outcr ends of the leversI and depress the arms or levers J. The lower end of the spring may belocated around a stud or pin, g, on the lever I, and its upper end maybe inserted in a socket or hole in the bar D, a-s shown in Fig. 3, orthe spring may be connected and held in position in some other suitablemanner; and in place of using a coiled spring, as shown, a flat springarranged to bear against the lever may be used, one end of the springbeing attached to the bar D, so as to have its free end bear properly onthe lever.

K are rods or shafts, four being used when four arms or levers J areused, to which the inner end of the arm or lever is attached in anysuitable manner to have its rise and fall rock the rod or shaft to whichit is attached.

L are eccentrics, Secured one to each outer end of the rods or shafts K,so as to bring an eccentric on each side f each guide-rail A, and insuch relation to the guide-rail as to be held clear thcreof, or bebrought in contact therewith, by rocking and holding the shafts K in theproper direction. As shown, these eccentrics have the edge or face whichen gages with the guide-rail serrated, for the purpose of producing afirmer and strongcr bite when the eccentrics are brought into contactwith the rails.

M arejournal bearings or boxes, one for each shaft or rod K, Secured inany suitable manner to the upper face of the end bars, E, to bring theshafts in proper position for the eccentrics in relation to theguide-rails.

N are bars or arms attached to the upper face of the bar D, and havingon each end a .box or journal to receive and support the inner end ofthe shafts or rods K. Other means than these bars or arms N could beused to support the inner ends of the shafts. i

The arms or levers J are arranged in such relation to the eccentrics Lthat when the arms or levers are raised the eccentrics will be held outof contact with the guide-rails, and when these arms or levers aredepressed or thrown down the eccentrics will be turned so as to bringthen into contact or engagement with the face of the guide-rails, and,if desired, the connection of the arms or levers through their rods orshafts may be adjustable to bring the arms or levers in proper positionto cause them to act and hold the eccentrics-ont of contact, or bringthem into contact with the guide-rails, the connection, however, beingone by which, when the arms or levers are adj usted properly, they canbe locked firmly with the rock-shafts or rods, or the connection of thearms or levers with the rods or shafts can be made permanent, and theeccentries be connected adjustably with a connection by which they couldbe locked firmly when adjnsted to the rods or shafts. c

The operation is as follows: When the cage or platform is workingproperly the hoistingc'a-ble will be taut or strained, drawing up thestirrup or hanger H, raising the outer or free ends of the levers I,keeping the eccentrics L clear of the guide-rails, so that the cage orplatform is free to ascend and descend without interference from theeccentrics; but if the cable breaks or becomes slack from' any cause thestirrup or hanger H at once drops, allowing the outer or free ends ofthe levers I to drop, throwing down the arms or levers J, and turning orrocking the rods or shafts K, bringing the eccentrics into contact or engagement with the guide-rails, which steps the descent of the cage orplatform, and prevents any falling thereof.

As shown in Figs. 5 and 6, a single lever I is used instead of two, anda single set of arms or levers J are' employed instead of two sets, andin this form of Construction rods or shafts K', extending across thecage or platform, and having on each end an eccentric, L, are used, arod or shaft being placed on each side of the bar D, as shown, mountedin suitable bearings, M, on the end bars, E. The operation of this formof construction is the same as that described where two levers I areemployed, the lever I, when its outer end is elevated, holding theeccentrics out of contact through the arms or levers J, and when thecable fails, from breakage or other cause, the outer end of the lever Idrops, throwing down the levers J, forcin g the cccentrics into contactwith the guide-rails.

Some elevators have the guide-rails located and arranged at diagon alcorners of the cage or platform, and for this form of construction thedevices described can be used to operate the eccentrics; but theeccentrics will have to be of a peculiar form in order to be located soas to work, and this form is shown in Figs. 7, S, and 9 represented bythe letter L'. It is necessary, in order to produce a firm bite, thatthe engaging face of the eccentric should have a bearin g-face of somecon siderable width, and if the eccentric were left of this same widthit would be impossible to insert it in the space formed between theguide-rail and the wall of the elevator-way and leave sufficienthearing-surface to insure a stoppage. This defeat is obviated by usingan eccentric of the form shown in Figs. 7, S, and 9, in which the faceof the eccentric which lies adjacent to the wall of the elevator-way iscut diagonally, forming a face, which, when the parts are i-n place,stands parallel withthe wall, so that the hearing-surface of therequired width is brought to bear against the guide-rail, and the eccentric is free to turn or be turned so as to clear the guiderail or bebrought in contact therewith. The operation of the eccentric will be thesame as that described for the forms of arrangement shown in Figs. l to6, inclusive.

As shown, double sets of eccentrics are provided with actuating devicestherefor; but it is evident that one set could be used working inconnection with slidin g guides on the opposite side of the guide-rails,and that instead of using two shafts K', or four shafts K, a singleshaft K' and two shafts K could be used with beneficial and goodresults.

As shown, the rock-shafts are mounted on top of the upper framework; butit is evident IIS that they could be located underneath such framework,the bearings M being secured to the under side of the end pieces, E.

When the shafts located below the framework the ears or supports zl onthe ends of the cross-heads I( will depend or hang down so as to engageand support the levers J, but that is the only change required.

It is also evident that the devices could be applied to the bottom ofthe cage or platform, suitable connecting-rods' being provided for theattachment of the cable, and when so used the cross-heads I' should havedepending lips or supports d, the same as when the attachment is made tothe under side of the upper frane.

Some other form and arrangement of stirrup or hanger than that showncould be used to support the levers or lever I, so long as it wouldoperate to raise the levers or lever when the cable is acting and allowsuch levers to drop in case the cable becomes non-acting.

The weghts h alone could be used for throwing the arms or levers J down,or the springs f alone could be used for this purpose, or both weightsand the springs could be used, it' desired.

What I claim as new, and desire to secure by Letters Patent, is

l. In a safety attachment for elevators, a lifting or controlling lever,pivoted at one end and provided at its other end with a crosshead, incombination with a device adapted to come in contact with a rail or barand connected with the cross-head on the lifting or controlling leverand means for Operating the latter, substantially as described.

2. The combination of a lifting or controlling lever, pivoted at one endand provided at its other end with a cross-head, with an eccentricadapted to come in contact with a rail or bar and connected With thecross-head on the liftin g or controllin g lever and means for operatingthe latter, substantiallyas described.

3. The combination of a lifting or controlling lever, pivoted at one endand provided at its other end with across-head, with an eccentricadapted to operate on a rail or bar, a rockshaft connected with theeccentric, a connecting device between the rock-shaft and the cross-headon the lifting or controlling lever, and means for Operating the latter,substantially as described.

4. The combination of a lifting or controlling lever, pivoted at one endand provided at and arms or levers J are ling lever,

ling levers,

ling levers,

its other end with a cross-head, with an eccentric adapted to operate ona rail or bar, a rockshaft connected with the eccentric, an arm or leverattached to the rock-shalt and with the' cross-head on the lifting orcontroland means for operatin g the latter, substantially as described.

5. The combination of a lifting or controlling lever, pivoted at oneend, an eccentrc adapted to-operate on a guide rail or bar, devicesconnecting the eccentric with the controlling lever, and a stirrupsupporting the lifting and controlling lever,`substantially asdescribed. v

6. The combination of two liftin g or controlvided at the other end withacross-head, with connected each pivoted at one end and proe devicesadapted to operate against rails or bars and connecting with thecross-heads on the lifting or controlling levers, and means foroperating the latter, substantially as described.

7. The combination of two lit'ting or controlling levers, each pivotedat one end and provided at the other end with a cross-head, witheccentrics adapted to operate against rails or bars, devices connectingsaid eccentrcs with the cross-heads on the lifting or controllinglevers, and means for Operating the latter, substantially as describe i8. The combination of two lifting or controleach pivoted atone end andprovided at the other end with a cross-head, with eccentrics adapted tooperate on rails or bars, rock-shafts connected with the eccentrics,devices connecting the rock-shafts with the crossheads on the liftng orcontrolling` levers, and means for Operating the latter,- substantiallyas described.

9. The combination of two lifting or controlling levers, each pivoted atone end and provided atthe other end with a cross-head, with eccentricsadapted to operate on rails or bars, rock-shafts connected withtheeccentrics, arms or bars attached to the rock-shafts and connectedwith the cross-heads on the lifting or IOO controlling levers, and meansfor operatin g the latter, substantially as described.

10. An eccentric, Ti', having adiagonal face for enabling it to be usedon guide-rails located at diagonal corers of the case or platform,substantially as and for the purposes described.

FREDERICK W. VOERDE.

Witnesses:

ALBERT H. ADAMS, EDGAR T. Bom).

